Is SET p.Leu166Val (c.496T>G) pathogenic?

SET p.Leu166Val (c.496T>G) is classified Uncertain significance in SET (ClinVar, Single submitter, 1 submitter; last evaluated 2025-01-21). AlphaMissense: likely pathogenic (0.7912); Absent from gnomAD v4.1.

How common is SET p.Leu166Val (c.496T>G) in the general population?

SET p.Leu166Val (c.496T>G) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about SET p.Leu166Val (c.496T>G)?

AlphaMissense predicts likely pathogenic (score 0.7912) — an in-silico prediction, not a clinical call.

SET p.Leu166Val

c.496T>G · VCV3365560

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.7912 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

2/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.7912	likely pathogenic
REVEL	0.151	moderately benign-leaning
SaProt	LLR -11.76	damaging
⇒ AlphaMissense and SaProt call this damaging; REVEL does not.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 5.1	GERP 1, phastCons 1
Regional constraint	o/e 0.25	constrained · MANE · 4,260 bp · p 5.8e-31 · regional, not allelic
Overall
CADD	24.0	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

⚠ Isoform check: AlphaMissense numbered on a different transcript (AM L179V vs ClinVar L166V) — verify the residue.

Population frequency

gnomAD v4.1 · exomes + genomes

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: SET
Protein: p.Leu166Val
Coding: c.496T>G
MANE Select: NM_003011
Type: single nucleotide variant
Location: chr9:128693641 (GRCh38)
Gene constraint: LOEUF 0.167 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 78.62 · 3 PDB
Residue 166: a β-strand; the 'earmuff domain' region; the 'disordered' region

Full SET gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

SET c.663+5G>C Pathogenic ★★ same type
SET p.His105Tyr Likely pathogenic ★★ same type
SET p.Asp224Asn Uncertain significance ★★ ⚠ same type
SET p.Asp260Glu Uncertain significance ★★ ⚠ same type
SET p.Glu261Asp Uncertain significance ★★ ⚠ same type
SET p.Phe189Cys Uncertain significance ★★ ⚠ same type
SET c.132-17C>T Benign ★★ same type
SET c.493-14C>T Benign ★★ same type

Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →

Cite Sugi Variant

Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/set-p-leu166val (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown